18th Cavalry Regiment was organized at Dallas, Texas, during the spring of 1862 with men from Dallas, Denton, and Belton. The unit was soon dismounted and ordered to Arkansas where in January, 1863, it was captured at Arkansas Post. After being exchanged, it was consolidated with the 17th, 24th, and 25th Texas Cavalry Regiments (dismounted), and placed in Deshler's, J.A. Smith's, and Granbury's Brigade. This command fought with the Army of Tennessee from Chickamauga to Nashville and ended the war in North Carolina. The 18th was organized with about 900 men. The 17th/18th/24th/25th sustained 200 casualties at Chickamauga and totalled 690 men and 520 arms in December, 1863. Very few surrendered on April 26, 1865. The field officers were Colonel Nicholas H. Darnell, Lieutenant Colonel John T. Coit, and Majors Charles C. Morgan and William A. Ryan.